Custom Groups/tabs in Outline view

[randomcoggles]

💡Navigability improvement

A class can have too many members. It makes it hard to navigate through too many members.

As a developer, in Outline view, I want to be able to select a group of functions and class members and add them to a new tab(inside outline view).
For example, if I am working with a new feature inside a class I want to be able to work only with class members related to that specific class feature.

💡Nice to have

It would be nice to have a handle on each class member to drag it to you custom tab. This handle would show only on mouse hover.
Ctrl+ left click, would bulk select multiple members.
When multiple members are selected, show a button, Create new tab(with selected members).

💡Even nicer to have

Class members would show TODO's icons on list items.
Be able to add TODO's to class members.